Mitsubishi Electric FR-F800 Series Instruction Manual page 565

 To coast the motor to a stop
• Set the time required to shut off the output after the start signal is turned OFF in Pr.250. When "1000 to 1100" is set, output
is shut off after a lapse of the (Pr.250 - 1000) seconds.
• The output is shut off after a lapse of the setting time of Pr.250 when the start signal is turned OFF. Motor coasts to a stop.
• The RUN signal is turned OFF when the output is shut off.
NOTE
• The stop selection setting is disabled when the following functions are operating.
Power failure stop function (Pr.261)
PU stop (Pr.75)
Deceleration stop due to a communication error (Pr.502)
Offline auto tuning (with motor rotation)
• When Pr.250 ≠ "9999 or 8888", acceleration/deceleration is performed in accordance to the frequency command until the
output is shut off by turning OFF the start signal.
• When the restart signal is turned ON during the motor coasting, the operation is resumed from Pr.13 Starting frequency.
 Start signal operation selection
 2-wire type (STF signal, STR signal)
• The following figure shows the 2-wire type connection.
• As an initial setting, the forward/reverse rotation signals (STF/STR) acts as both start and stop signals. Either one turned
ON will be enabled, and the operation will follow that signal. The motor will decelerate to a stop when both are turned OFF
(or both are turned ON) during the operation.
• The frequency can be set by inputting 0 to 10 VDC between the speed setting input terminals 2 and 5, or with Pr.4 to Pr.6
Multi-speed setting (high speed, middle speed, and low speed). (For the multi-speed operation, refer to
• By setting Pr.250 = "1000 to 1100, 8888", the STF signal input becomes the start command and the STR signal input
becomes the forward/reverse command.
Forward
rotation start
Reverse
rotation start
STF
STR
2-wire type connection example (Pr.250 = "9999")
564
5. PARAMETERS
5.13 (G) Control parameters
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Start signal
RUN signal
STF
Inverter
STR
SD
10
2
5
ON
ON
search engine
Output is shut off when
set time elapses after
start signal turns OFF
Pr.250
Motor coasts to stop
OFF
ON
OFF
ON
Start signal
Forward/
reverse
signal
Time
STF
STR
2-wire type connection example (Pr.250 = "8888")
Time
STF
Inverter
STR
SD
10
2
5
ON
ON
page 263.)
Time